@ocap/statedb-fs/lib/table/token.js

OCAP statedb adapter that uses fs as backend

const FsTable = require('./base');

class TokenTable extends FsTable {
  // eslint-disable-next-line require-await
  async existBySymbol(symbol) {
    if (!symbol) {
      throw new Error('param symbol is required');
    }

    return this.collection.count({ symbol }) > 0;
  }
}

module.exports = TokenTable;